China’s devaluation represents a difficult dilemma for the Obama administration. The United States Treasury has tried to use quiet diplomacy in recent years to encourage China to free up its currency policies, while blocking efforts in Congress to punish China for major intervention in currency markets over the past decade to slow the rise of the renminbi. Many in Congress have long accused China of unfairly building up its manufacturing sector at the expense of American jobs by undervaluing the renminbi, and the Chinese devaluation could fan those criticisms.